TITLE:
Avahi Denial of Service and Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA20022

VERIFY ADVISORY:
http://secunia.com/advisories/20022/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From local network

SOFTWARE:
Avahi 0.x
http://secunia.com/product/9784/

DESCRIPTION:
Two vulnerabilities have been reported in Avahi, which can be
exploited by malicious people to cause a DoS (Denial of Service) and
potentially compromise a vulnerable system.

1) An error within the handling of mDNS name conflicts can be
exploited to disconnect mDNS/DNS-SD services.

2) An unspecified error in avahi-core can be exploited to cause a
buffer overflow and may allow arbitrary code execution with
privileges of the "avahi" user.

The vulnerabilities have been reported in versions prior to 0.6.10.

SOLUTION:
Update to version 0.6.10.
http://avahi.org/download/avahi-0.6.10.tar.gz

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://0pointer.de/cgi-bin/viewcvs.cgi/*checkout*/trunk/docs/NEWS?root=avahi

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